Sacroiliac joint stabilization system

Abstract

A sacroiliac joint implant system includes a primary implant configured to be received in a sacroiliac joint of a patient and a secondary implant configured to couple with the primary implant. The primary implant includes a body extending from a proximal end to a distal end and a plurality of threads extending from the body. The secondary implant includes a first anchor configured to anchor within a sacrum of the patient and a second anchor configured to anchor within an ilium of the patient.

What is claimed is: 
     
         1 . A sacroiliac joint implant system, comprising:
 a primary implant configured to be received in a sacroiliac joint of a patient, the primary implant comprising:
 a body extending from a proximal end to a distal end; and 
 a plurality of threads extending from the body; and 
   a secondary implant configured to couple with the primary implant, the secondary implant comprising a plurality of anchors, the plurality of anchors comprising a first anchor configured to anchor within a sacrum of the patient and a second anchor configured to anchor within an ilium of the patient.   
     
     
         2 . The system of  claim 1 , wherein the primary implant comprises a plurality of tabs defining a plurality of recesses, wherein the plurality of recesses are configured to receive the secondary implant. 
     
     
         3 . The system of  claim 1 , wherein the secondary implant comprises a ring configured to receive a head of the primary implant. 
     
     
         4 . The system of  claim 3 , wherein the ring is configured to couple with the head of the primary implant to facilitate polyaxial movement of the primary implant relative to the secondary implant. 
     
     
         5 . The system of  claim 3 , wherein the secondary implant comprises a plurality of arms extending laterally from the ring, wherein each of the plurality of anchors is coupled to one of the plurality of arms. 
     
     
         6 . The system of  claim 1 , further comprising a fastener configured to couple the primary implant and the secondary implant. 
     
     
         7 . The system of  claim 1 , wherein the primary implant comprises a channel configured to receive bone graft material. 
     
     
         8 . The system of  claim 7 , wherein the primary implant comprises a plurality of openings between the channel and an exterior of the primary implant. 
     
     
         9 . The system of  claim 1 , wherein each of the plurality of anchors comprises a plurality of openings configured to facilitate bony ingrowth. 
     
     
         10 . The system of  claim 1 , wherein each of the plurality of anchors comprises a leading edge configured to cut bone. 
     
     
         11 . A method for implanting a sacroiliac joint implant system, comprising:
 making an incision;   advancing a primary implant through the incision and into a sacroiliac joint of a patient, wherein the primary implant comprises:
 a body extending from a proximal end to a distal end; and 
 a plurality of threads extending from the body; 
   advancing a secondary implant through the incision towards the sacroiliac joint, the secondary implant comprising a plurality of anchors;   anchoring a first anchor of the plurality of anchors into a sacrum of the patient; and   anchoring a second anchor of the plurality of anchors in the ilium of the patient.   
     
     
         12 . The method of  claim 11 , wherein advancing the secondary implant through the incision towards the sacroiliac joint is performed after advancing the primary implant through the incision and into the sacroiliac joint of the patient. 
     
     
         13 . The method of  claim 11 , wherein advancing the secondary implant through the incision towards the sacroiliac joint is performed after advancing the primary implant through the incision and into the sacroiliac joint of the patient. 
     
     
         14 . The method of  claim 11 , further comprising coupling the primary implant and the secondary implant to one another. 
     
     
         15 . The method of  claim 14 , wherein coupling the primary implant and the secondary implant to one another is performed within the patient. 
     
     
         16 . The method of  claim 11 , further comprising advancing an instrument assembly through the incision, the instrument assembly comprising a guide comprising a plurality of slots extending therethrough, wherein advancing the secondary implant through the incision towards the sacroiliac joint comprises advancing each of the plurality of anchors along one of the plurality of slots of the guide. 
     
     
         17 . The method of  claim 16 , further comprising advancing the primary implant through a central lumen of the guide. 
     
     
         18 . The method of  claim 17 , wherein the central lumen is in communication with the plurality of slots. 
     
     
         19 . The method of  claim 16 , further comprising advancing a bone punch along the plurality of slots prior to advancing each of the plurality of anchors along one of the plurality of slots of the guide. 
     
     
         20 . The method of  claim 11 , further comprising:
 coupling the primary implant to an inserter; and   advancing the secondary implant along channels of the inserter to couple the secondary implant with the primary implant.